How severe is CVE-2013-3077?

CVE-2013-3077 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2013-3077 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3077?

CVE-2013-3077 primarily affects Freebsd. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3077?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-3077 published?

CVE-2013-3077 was published on 2013-08-28 and last updated on 2026-06-16.

CVE-2013-3077

CVE-2013-3077 is a high-severity vulnerability in Freebsd with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-189.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Freebsd
Published: 2013-08-28
Last modified: 2026-06-16

Description

Multiple integer overflows in the IP_MSFILTER and IPV6_MSFILTER features in (1) sys/netinet/in_mcast.c and (2) sys/netinet6/in6_mcast.c in the multicast implementation in the kernel in FreeBSD 8.3 through 9.2-PRERELEASE allow local users to bypass intended restrictions on kernel-memory read and write operations, and consequently gain privileges, via vectors involving a large number of source-filter entries.

Frequently asked questions

What is CVE-2013-3077?: Multiple integer overflows in the IP_MSFILTER and IPV6_MSFILTER features in (1) sys/netinet/in_mcast.c and (2) sys/netinet6/in6_mcast.c in the multicast implementation in the kernel in FreeBSD 8.3 through 9.2-PRERELEASE allow local users to bypass intended restrictions on kernel-memory read and write operations, and consequently gain privileges, via vectors involving a large number of source-filter entries.
How severe is CVE-2013-3077?: CVE-2013-3077 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2013-3077 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3077?: CVE-2013-3077 primarily affects Freebsd. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3077?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-3077 published?: CVE-2013-3077 was published on 2013-08-28 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:o:freebsd:freebsd:8.3:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:9.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:9.1:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:9.1:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:9.1:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:9.2:prerelease:*:*:*:*:*:*

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